C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
53/38, 39/53
C21B 7/00 (2006.01) C21B 13/06 (2006.01) C21B 13/14 (2006.01)
Patent
CA 1209343
Method and apparatus for the production of liquid iron from iron oxide ABSTRACT OF THE DISCLOSURE Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication with the reduction column by heat generated by reaction of oxygen-containing gas and carbonaceous material which reaction provides said reducing gas. To improve control of the process, the oxygen-containing gas and the carbonaceous material are respectively substantially pure oxygen and coal powder which are delivered separately into the melt vessel, and the liquid iron bath in the melt vessel is stirred so as at least partly to be kept in motion. By separate control of the oxygen and coal supplies, e.g. the level and/or direction of delivery, and by control of stirring, it is possible to control the ratio of CO and CO2 in the reducing gas and also the heat output in the melt vessel.
427729
Hoogovens Groep Bv
Ridout & Maybee Llp
LandOfFree
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